Explain the distinction between total and partial constraints.
Answer to relevant QuestionsFigure shows a lattice structure of generalization and specialization. For entity sets A, B, and C, explains how attributes are inherited from the higherlevel entity sets X and Y. Discuss how to handle a case where an ...Describe the differences inmeaning between the terms relation and relation schema. Illustrate your answer by referring to your solution to Exercise below.student (student-id, name, program)course (courseno, title, syllabus, ...Using the bank example, write relational-algebra queries to find the accounts held by more than two customers in the following ways:a. Using an aggregate function.b. Without using any aggregate functions.Let R = (A, B) and S = (A, C), and let r(R) and s(S) be relations. Using the special constant null, write tuple-relational-calculus expressions equivalent to each of the following: a. r 1 s b. r 1 s c. r 1 sShow that, in SQL, < > all is identical to not in.
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